<template>
  <el-container class="home-container">
      <!-- 头部区域 -->
  <el-header>
      <div>
          <img src="../assets/heima.png" alt="">
          <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!-- 页面主题 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
      <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单 -->
         <el-menu
      background-color="#333744"
      text-color="#fff" unique-opened :collapse="isCollapse"
      router :default-active="activePath"
      :collapse-transition="false"
      active-text-color="#409EFF">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>

        <!-- 二级菜单 -->
          <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children"
          :key="subItem.id" @click="saveNavState('/' + subItem.path)">
               <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
          </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <!-- 右侧主体 -->
    <el-main>
        <router-view></router-view>
    </el-main>
  </el-container>
  </el-container>
</template>

<script>
export default {
  data () {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
  .el-container{
      height: 100%;
  }
  .el-header {
      background-color: #373d41;
      display: flex;
      justify-content: space-between;
      padding-left: 0%;
      align-items: center;
      color: #ffffff;
      font-size:20px;
      > div {
          display: flex;
          align-items: center;
          span {
              margin: 15px;
          }
      }
}
  .el-aside{
    background-color: #333744;
}
  .el-main{
    background-color: #eaedf1;
  }
  .iconfont{
    margin-right: 10px;
  }
  .toggle-button{
    background-color: #4a5046;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
</style>
